Premier Rock Forum

ChudFusk wrote: Mon Apr 18, 2022 11:08 am

TylerDeadPine wrote: Sun Apr 17, 2022 10:17 pmI like this quench coolant idea. Basically any time someone can be slimed a-la You-Can't-Do-That-On-Television is good in my books.

Gwar might already have a patent on this

They might need to get molecular testing done to see if there's any sort of Faygo component - that's just good due diligence

I've played Roalnd JC120 and JC90, but have no experience with a Roland JC22? Curious about how bad the tiny speakers crap out...anyone?

kmc wrote: Sun Apr 24, 2022 11:11 am I've played Roalnd JC120 and JC90, but have no experience with a Roland JC22? Curious about how bad the tiny speakers crap out...anyone?

friend of mine does Jazzy/loopy hip-hop stuff w/ one and I did sound for him many times & never heard the speakers crap out. That being said, his stuff is more druggy/trippy and not really pushing it like I would think folks on a noise-rock forum might.

That being said, it's (hopefully) obvious that this is intendend for home/recording use. I wouldn't use it live unless you are working with a venue that you know has decent stage sound w/monitors, etc.

I had a JC-77 that just never gelled. It had like that jazz chorus sound, sure, but IMO it's a lot of overhead for that one tone. I gave it to a friend and bought a chorus pedal. Through my princeton reverb it does the JC thing convincingly and a whole lot more. Obviously a lot of people dig these amps so maybe I'm missing something!

Anybody know the speaker impedance of a TS25 (guitar version) off hand? Vaguely wondering about trying it through a cab, but it isn't currently all that accessible hence lazy question.

Also, anybody use this (25 + cab) with drums? Loud enough?

The TS-25 schematic calls out 8 ohms for the speaker.

Nate Dort wrote: Wed May 04, 2022 7:27 am The TS-25 schematic calls out 8 ohms for the speaker.

Awesome, thanks so much!

Adam_I_III wrote: Wed May 04, 2022 8:35 am

Nate Dort wrote: Wed May 04, 2022 7:27 am The TS-25 schematic calls out 8 ohms for the speaker.

Awesome, thanks so much!

This is as good a time as any to ask this question: I was always told from multiple older dudes way, way back that ohms on solid state amps doesn't matter [as much as it does on tube amps]. For example, it wasn't uncommon to see as many as four monitors chained together on a stage bringing the ohms down to who knows what. I mean we all have screwed this up at some point to know that mismatched ohms is not going to always do an instant death to equipment but still...

Truth or falsehood?

The manual for my Peavey M-3000 power amp says "Load impedance: 2 Ohms or greater (stable in any configuration)". Not sure if guitar amps were built with the same flexibility.

Garth wrote: Tue May 10, 2022 8:48 am

Adam_I_III wrote: Wed May 04, 2022 8:35 am

Nate Dort wrote: Wed May 04, 2022 7:27 am The TS-25 schematic calls out 8 ohms for the speaker.

Awesome, thanks so much!

This is as good a time as any to ask this question: I was always told from multiple older dudes way, way back that ohms on solid state amps doesn't matter [as much as it does on tube amps]. For example, it wasn't uncommon to see as many as four monitors chained together on a stage bringing the ohms down to who knows what. I mean we all have screwed this up at some point to know that mismatched ohms is not going to always do an instant death to equipment but still...

Truth or falsehood?

There's truth to this. Solid state amps don't have an output transformer. Using a cab with double the impedance just reduces its efficiency. But if the solid state amp says 4 ohm minimum I'd adhere to that.

Some tube amps are more tolerant than others. Vintage Fender combos will handle a 100% mismatch no problem. They even expected people to mismatch it. There's an extension cab output that if you leave the onboard speaker plugged in you will always have a mismatch. And if you plug into the ext jack without something in the main one, problems also arise because of the way the jacks are wired. I believe the general rule of thumb is that a tube amp prefers to have a lower load than a higher one (for example, I think an 8 ohm output transformer would slightly prefer to see 4 ohms than 16). Something about flyback. Some amps have diodes in place to protect against that (Ampeg). Hopefully someone else with a better understanding of electronics can expand on this.

Having said all of this, it's always good practice to use what the amp was designed to see.